PV-30A-1500
30A 1500VDC gPV fuse for combiner box output and inverter input protection with high current capacity.
Product Overview
Description
The PV-30A-1500 is a gPV-certified fuse designed for combiner box output and inverter input protection.
With 1500V DC rating and 30A current capacity, this fuse handles combined string currents in larger solar installations.
The gPV certification ensures reliable DC interruption at PV voltages.
Product Series
PV
Primary Application
Combiner box output protection
Key Features
- 1500V DC rating for utility-scale solar
- gPV certified per IEC 60269-7
- High current capacity for combined strings
- Larger 14x51mm size for higher current
- UV-resistant construction
- Suitable for inverter input protection
Specifications
| Voltage Rating | 1500V DC |
|---|---|
| Current Rating | 30A |
| Breaking Capacity | 20kA @ 1500V DC |
| Class | gPV |
| Size | 14x51mm |
| Mounting | PV fuse holder |
| Operating Temperature | -40°C to +90°C |
| Standards | IEC 60269-7, UL 248-19 |
Applications
Combiner box output protection
Electronic system design
Inverter input protection
Electronic system design
Combined string circuits
Electronic system design
DC distribution protection
Electronic system design
Utility-scale solar installations
Renewable energy systems
Large commercial solar systems
Renewable energy systems
FAE Expert Insights
"The PV-30A-1500 is designed for combiner box outputs and inverter inputs where multiple strings are combined. At 30A, it handles the combined current of 2-3 typical strings. The larger 14x51mm size accommodates the higher current rating while maintaining gPV certification. I frequently specify these for the output side of combiner boxes feeding string inverters. The 1500V rating supports high-voltage system designs. For combined string protection and inverter inputs, this fuse provides the current capacity and safety certification required."
High-current gPV protection for combiner outputs and inverter inputs
— Jennifer Chen, BeiLuo
Frequently Asked Questions
Where should 30A fuses be used in solar systems?
PV-30A-1500 fuses are typically used at combiner box outputs and inverter inputs where multiple strings are combined. They are not typically used for individual string protection due to the high current rating.
Use for combiner box outputs and inverter inputs, not individual string protection.
How many strings can be combined for 30A protection?
The number of strings that can be combined depends on module Isc. Typically 2-3 strings with 10A Isc modules can be combined for 30A protection. Calculate total Isc x 1.56 per NEC 690.9 to verify. For detailed specifications and application support on bussmann PV-30A-1500, refer to the datasheet or contact our team.
Calculate combined Isc x 1.56. Verify total is within 30A rating.
What is the difference between string and combiner fuses?
String fuses (10A-20A) protect individual PV strings. Combiner fuses (25A-32A) protect combined circuits at combiner box outputs. Higher current ratings require larger physical fuse sizes. For detailed specifications and application support on bussmann PV-30A-1500, refer to the datasheet or contact our team.
Use 10A-20A for strings, 25A-32A for combined circuits.
Can 30A fuses be used in 1000V systems?
Yes, the 1500V rating is suitable for 1000V systems with excellent margin. The higher voltage rating allows for future system upgrades to 1500V without changing fuses. For detailed specifications and application support on bussmann PV-30A-1500, refer to the datasheet or contact our team.
Suitable for 1000V systems with margin for future expansion.
What fuse holder is required for 30A fuses?
30A fuses require fuse holders rated for 14x51mm size and 1500V DC. Verify the holder is gPV certified and rated for at least 30A continuous current. Not all 10x38mm holders accommodate 14x51mm fuses.
Verify fuse holder compatibility for 14x51mm size and 30A rating.